Page Indexing

Hello and thank you. I hope I explain this properly :) Regarding: Google search Console/Indexing/Pages/Page indexing/Why pages aren’t indexed/Page with redirect. Under See Details: Validation failed Started: 6/13/24. Failed: 6/15/24. Sitemap: All known pages. Pending 769. Failed 173 Under Why pages aren't indexed, it shows 942 pages affected. 1 of which is my non www home page. A 1/3 of which are spam URLs. Note: www is redirected to non www. Note: Under Settings: WordPress Address (URL) is non www home page. Site Address (URL) is the same. I used to have my site in Joomla. When I recreated the site in WP, I redirected (301) a lot of my URLs (1210) to the original Post which joomla calls an "Article". In the following example, what I mean by original is alternative-profit-and-loss-statement-jumbo" Example: Old URL: mortgage-service-clarification/138-unconventional-mortgages/non-qualified-mortgages/306-alternative-profit-and-loss-statement-jumbo URL: alternative-profit-and-loss-statement-jumbo Note: the 138 and 306 are the item #'s from Joomla site. I can't use a canonical tag (right?) because the Old URL location no longer exists, it did in Joomla site. Make sense? I'm having an issue with indexing under Google search Console/Indexing/Pages/Page indexing/Page with redirect. How can I rectify this? Thank you for your time!